Narrowband physical broadcast channel transmission method and device
View Patent ↗A narrowband PBCH transmission method and a narrowband PBCH transmission device are provided. A network side device transmits a narrowband PBCH carrying at least CRS transmission indication information. The CRS transmission indication information is to indicate the CRS port number and/or CRS frequency domain position in the LTE system. Through the CRS transmission indication information, it is able to enable the narrowband terminal working simultaneously with the LTE terminal in the LTE bandwidth to obtain the CRS in the LTE system, so that the narrowband downlink transmission may be demodulated through the CRS of the LTE system, and then the signal reception based on the CRS may be realized.
1. A narrowband physical broadcast channel (PBCH) transmission method, comprising: transmitting by a network side device a narrowband PBCH carrying at least common reference signal (CRS) transmission indication information;
wherein the CRS transmission indication information comprises: CRS frequency domain position indication information in a Long Term Evolution (LTE) system;
wherein
the CRS frequency domain position indication information is to indicate an offset of a frequency domain position of the narrowband transmission relative to a center frequency point in a LTE system bandwidth; or
the CRS frequency domain position indication information is to indicate a position of a CRS corresponding to a frequency domain resource of the narrowband transmission in a CRS sequence of the LTE system relative to the center frequency point in the LTE system bandwidth.
2. The narrowband PBCH transmission method according to claim 1 , wherein the CRS transmission indication information further comprises:
CRS port number indication information in the LTE system.
3. The narrowband PBCH transmission method according to claim 2 , wherein the CRS port number indication information comprises:
1-bit CRS port number indication information to indicate 1-port CRS transmission or 2-port CRS transmission; or
2-bit CRS port number indication information to indicate 1-port CRS transmission, 2-port CRS transmission or 4-port CRS transmission.
4. The narrowband PBCH transmission method according to claim 1 , wherein the CRS frequency domain position indication information is to indicate the offset of the frequency domain position of the narrowband transmission relative to the center frequency point in the LTE system bandwidth, the CRS frequency domain position indication information comprises:
1-bit indication information to indicate that a frequency domain resource of the narrowband transmission is located at a high frequency band or a low frequency band divided by the center frequency point of the LTE system bandwidth; and C-bit indication information to indicate an offset of the frequency domain position of the narrowband transmission relative to the center frequency point, wherein the offset is a subcarrier offset or calculated in units of one half of RB or six subcarriers;
or
1-bit indication information to indicate that the LTE system bandwidth comprises an odd or an even number of available RBs; 1-bit indication information to indicate that a frequency domain resource of the narrowband transmission is located at a high frequency band or a low frequency band divided by the center frequency point of the LTE system bandwidth; and D-bit indication information to indicate a RB offset of the frequency domain position of the narrowband transmission relative to the center frequency point or a center RB of the LTE system bandwidth, wherein the RB offset is an integer number of RBs.
5. The narrowband PBCH transmission method according to claim 4 , wherein in the case that the offset is the subcarrier offset,
C
=
⌈
log
2
(
N
sc
RB
×
max
i
∈
A
(
N
RB
,
i
DL
)
/
2
)
⌉
,
wherein N RB,i DL is the quantity of available RBs in each of A types of LTE system bandwidth, N sc RB is the quantity of subcarriers of one RB in the LTE system, or C=10; or in the case that the offset is calculated in units of one half of RB or six subcarriers,
C
=
⌈
log
2
max
i
∈
A
(
N
RB
,
i
DL
)
⌉
,
wherein N RB,i DL is the quantity of available RBs in each of the A types of LTE system bandwidth; or C=7;
or
D
=
⌈
log
2
(
max
i
∈
A
(
N
RB
,
i
DL
)
/
2
)
⌉
,
wherein N RB,i DL is the quantity of available RBs in each of the A types of LTE system bandwidth; or D=6.
6. The narrowband PBCH transmission method according to claim 1 , wherein the CRS frequency domain position indication information is to indicate the position of the CRS corresponding to the frequency domain resource of the narrowband transmission in the CRS sequence of the LTE system relative to the center frequency point in the LTE system bandwidth, the CRS frequency domain position indication information comprises:
1-bit indication information to indicate that a frequency domain resource of the narrowband transmission is located at a high frequency band or a low frequency band divided by the center frequency point of the LTE system bandwidth; and
E-bit indication information to indicate a CRS offset of the CRS corresponding to the frequency domain resource of the narrowband transmission relative to the center frequency point.
7. The narrowband PBCH transmission method according to claim 6 , wherein
E
=
⌈
log
2
max
i
∈
A
(
N
RB
,
i
DL
)
⌉
,
N RB,i DL is the quantity of available RBs in each of A types of LTE system bandwidth; or E=7.
8. The narrowband PBCH transmission method according to claim 1 , wherein the narrowband PBCH further carries one or two of the following indication information:
indication information to indicate whether the narrowband comprises an LTE control region;
indication information to indicate a size of the LTE control region.
9. A narrowband physical broadcast channel (PBCH) receiving method, comprising: receiving by a terminal side device a narrowband PBCH carrying common reference signal (CRS) transmission indication information;
wherein the CRS transmission indication information comprises: CRS frequency domain position indication information in a Long Term Evolution (LTE) system;
wherein
the CRS frequency domain position indication information is to indicate an offset of a frequency domain position of the narrowband transmission relative to a center frequency point in a LTE system bandwidth; or
the CRS frequency domain position indication information is to indicate a position of a CRS corresponding to a frequency domain resource of the narrowband transmission in a CRS sequence of the LTE system relative to the center frequency point in the LTE system bandwidth.
10. The narrowband PBCH receiving method according to claim 9 , wherein the CRS transmission indication information further comprises:
CRS port number indication information in the LTE system.
11. The narrowband PBCH receiving method according to claim 10 , the CRS port number indication information comprises:
1-bit CRS port number indication information to indicate 1-port CRS transmission or 2-port CRS transmission; or
2-bit CRS port number indication information to indicate 1-port CRS transmission, 2-port CRS transmission or 4-port CRS transmission.
12. The narrowband PBCH receiving method according to claim 9 , wherein the CRS frequency domain position indication information is to indicate the offset of the frequency domain position of the narrowband transmission relative to the center frequency point in the LTE system bandwidth, the CRS frequency domain position indication information comprises:
1-bit indication information to indicate that a frequency domain resource of the narrowband transmission is located at a high frequency band or a low frequency band divided by the center frequency point of the LTE system bandwidth; C-bit indication information to indicate an offset of the frequency domain position of the narrowband transmission relative to the center frequency point, wherein the offset is a subcarrier offset or calculated in units of one half of RB or six subcarriers;
or
1-bit indication information to indicate that the LTE system bandwidth comprises an odd or an even number of available RBs; 1-bit indication information to indicate that a frequency domain resource of the narrowband transmission is located at a high frequency band or a low frequency band divided by the center frequency point of the LTE system bandwidth; and D-bit indication information to indicate a RB offset of the frequency domain position of the narrowband transmission relative to the center frequency point or a center RB of the LTE system bandwidth, wherein the RB offset is an integer number of RBs.
13. The narrowband PBCH receiving method according to claim 12 , wherein in the case that the offset is the subcarrier offset,
C
=
⌈
log
2
(
N
sc
RB
×
max
i
∈
A
(
N
RB
,
i
DL
)
/
2
)
⌉
,
wherein N RB,i DL is the quantity of available RBs in each of A types of LTE system bandwidth, N sc RB is the quantity of subcarriers of one RB in the LTE system, or C=10; or in the case that the offset is calculated in units of one half of RB or six subcarriers,
C
=
⌈
log
2
max
i
∈
A
(
N
RB
,
i
DL
)
⌉
,
wherein N RB,i DL is the quantity of available RBs in each of the A types of LTE system bandwidth; or C=7;
or
D
=
⌈
log
2
(
max
i
∈
A
(
N
RB
,
i
DL
)
/
2
)
⌉
,
wherein N RB,i DL is the quantity of available RBs in each of the A types of LTE system bandwidth; or D=6.
14. The narrowband PBCH receiving method according to claim 9 , wherein the CRS frequency domain position indication information is to indicate the position of the CRS corresponding to the frequency domain resource of the narrowband transmission in the CRS sequence of the LTE system relative to the center frequency point in the LTE system bandwidth, the CRS frequency domain position indication information comprises:
1-bit indication information to indicate that a frequency domain resource of the narrowband transmission is located at a high frequency band or a low frequency band divided by the center frequency point of the LTE system bandwidth;
E-bit indication information to indicate a CRS offset of the CRS corresponding to the frequency domain resource of the narrowband transmission relative to the center frequency point.
15. The narrowband PBCH receiving method according to claim 14 , wherein
E
=
⌈
log
2
max
i
∈
A
(
N
RB
,
i
DL
)
⌉
,
N RB,i DL is the quantity of available RBs in each of A types of LTE system bandwidth; or E=7.
16. The narrowband PBCH receiving method according to claim 9 , wherein the narrowband PBCH further carries one or two of the following indication information: indication information to indicate whether the narrowband comprises an LTE control region; indication information to indicate a size of the LTE control region.
17. A narrowband physical broadcast channel (PBCH) transmission device, comprising a processor, a memory, a transceiver and a bus interface connected to each other via a bus, wherein the processor is configured to read a program in the memory to enable the narrowband PBCH transmission device to:
carry, via the transceiver, common reference signal (CRS) transmission indication information on a narrowband PBCH; and
transmit, via the transceiver, the narrowband PBCH;
wherein the CRS transmission indication information comprises: CRS frequency domain position indication information in a Long Term Evolution (LTE) system;
wherein the CRS frequency domain position indication information is to indicate an offset of a frequency domain position of the narrowband transmission relative to a center frequency point in a LTE system bandwidth; or
the CRS frequency domain position indication information is to indicate a position of a CRS corresponding to a frequency domain resource of the narrowband transmission in a CRS sequence of the LTE system relative to the center frequency point in the LTE system bandwidth.
18. The narrowband PBCH transmission device according to claim 17 , wherein the CRS transmission indication information further comprises: CRS port number indication information in the LTE system.
19. The narrowband PBCH transmission device according to claim 18 , wherein the CRS port number indication information comprises:
1-bit CRS port number indication information to indicate 1-port CRS transmission or 2-port CRS transmission; or
2-bit CRS port number indication information to indicate 1-port CRS transmission, 2-port CRS transmission or 4-port CRS transmission.
20. The narrowband PBCH transmission device according to claim 17 , wherein the CRS frequency domain position indication information is to indicate the offset of the frequency domain position of the narrowband transmission relative to the center frequency point in the LTE system bandwidth, the CRS frequency domain position indication information comprises:
1-bit indication information to indicate that a frequency domain resource of the narrowband transmission is located at a high frequency band or a low frequency band divided by the center frequency point of the LTE system bandwidth; and C-bit indication information to indicate an offset of the frequency domain position of the narrowband transmission relative to the center frequency point, wherein the offset is a subcarrier offset or calculated in units of one half of RB or six subcarriers;
or
1-bit indication information to indicate that the LTE system bandwidth comprises an odd or an even number of available RBs; 1-bit indication information to indicate that a frequency domain resource of the narrowband transmission is located at a high frequency band or a low frequency band divided by the center frequency point of the LTE system bandwidth; and D-bit indication information to indicate a RB offset of the frequency domain position of the narrowband transmission relative to the center frequency point or a center RB of the LTE system bandwidth, wherein the RB offset is an integer number of RBs.
21. The narrowband PBCH transmission device according to claim 20 , wherein in the case that the offset is the subcarrier offset,
C
=
⌈
log
2
(
N
sc
RB
×
max
i
∈
A
(
N
RB
,
i
DL
)
/
2
)
⌉
,
wherein N RB,i DL is the quantity of available RBs in each of A types of LTE system bandwidth, N sc RB is the quantity of subcarriers of one RB in the LTE system, or C=10; or in the case that the offset is calculated in units of one half of RB or six subcarriers,
C
=
⌈
log
2
max
i
∈
A
(
N
RB
,
i
DL
)
⌉
,
wherein N RB,i DL is the quantity of available RBs in each of the A types of LTE system bandwidth; or C=7;
or
D
=
⌈
log
2
(
max
i
∈
A
(
N
RB
,
i
DL
)
/
2
)
⌉
,
wherein N RB,i DL is the quantity of available RBs in each of the A types of LTE system bandwidth; or D=6.
22. The narrowband PBCH transmission device according to claim 17 , wherein the CRS frequency domain position indication information is to indicate the position of the CRS corresponding to the frequency domain resource of the narrowband transmission in the CRS sequence of the LTE system relative to the center frequency point in the LTE system bandwidth, the CRS frequency domain position indication information comprises:
1-bit indication information to indicate that a frequency domain resource of the narrowband transmission is located at a high frequency band or a low frequency band divided by a center frequency point of a LTE system bandwidth;
E-bit indication information to indicate a CRS offset of the CRS corresponding to the frequency domain resource of the narrowband transmission relative to the center frequency point.
23. The narrowband PBCH transmission device according to claim 22 , wherein
E
=
⌈
log
2
max
i
∈
A
(
N
RB
,
i
DL
)
⌉
,
N RB,i DL is the quantity of available RBs in each of A types of LTE system bandwidth; or E=7.
24. The narrowband PBCH transmission device according to claim 17 , wherein the narrowband PBCH further carries one or two of the following indication information: indication information to indicate whether the narrowband comprises an LTE control region; indication information to indicate a size of the LTE control region.
25. A narrowband physical broadcast channel (PBCH) receiving device, comprising a processor, a memory, a transceiver and a bus interface connected to each other via a bus, wherein the processor is configured to read a program in the memory to enable the narrowband PBCH receiving device to: receive, via the transceiver, a narrowband PBCH carrying at least common reference signal (CRS) transmission indication information;
wherein the CRS transmission indication information comprises: CRS frequency domain position indication information in a Long Term Evolution (LTE) system;
wherein the CRS frequency domain position indication information is to indicate an offset of a frequency domain position of the narrowband transmission relative to a center frequency point in a LTE system bandwidth; or
the CRS frequency domain position indication information is to indicate a position of a CRS corresponding to a frequency domain resource of the narrowband transmission in a CRS sequence of the LTE system relative to the center frequency point in the LTE system bandwidth.
26. The narrowband PBCH receiving device according to claim 25 , wherein the CRS transmission indication information further comprises: CRS port number indication information in the LTE system.
27. The narrowband PBCH receiving device according to claim 26 , wherein the CRS port number indication information comprises:
1-bit CRS port number indication information to indicate 1-port CRS transmission or 2-port CRS transmission; or
2-bit CRS port number indication information to indicate 1-port CRS transmission, 2-port CRS transmission or 4-port CRS transmission.
28. The narrowband PBCH receiving device according to claim 25 , wherein the CRS frequency domain position indication information is to indicate the offset of the frequency domain position of the narrowband transmission relative to the center frequency point in the LTE system bandwidth, the CRS frequency domain position indication information comprises:
1-bit indication information to indicate that a frequency domain resource of the narrowband transmission is located at a high frequency band or a low frequency band divided by the center frequency point of the LTE system bandwidth; and C-bit indication information to indicate an offset of the frequency domain position of the narrowband transmission relative to the center frequency point, wherein the offset is a subcarrier offset or calculated in units of one half of RB or six subcarriers;
or
1-bit indication information to indicate that the LTE system bandwidth comprises an odd or an even number of available RBs; 1-bit indication information to indicate that a frequency domain resource of the narrowband transmission is located at a high frequency band or a low frequency band divided by the center frequency point of the LTE system bandwidth; and D-bit indication information to indicate a RB offset of the frequency domain position of the narrowband transmission relative to the center frequency point or a center RB of the LTE system bandwidth, wherein the RB offset is an integer number of RBs.
29. The narrowband PBCH receiving device according to claim 28 , wherein in the case that the offset is the subcarrier onset,
C
=
⌈
log
2
(
N
sc
RB
×
max
i
∈
A
(
N
RB
,
i
DL
)
/
2
)
⌉
,
wherein N RB,i DL is the quantity of available RBs in each of A types of LTE system bandwidth, N sc RB is the quantity of subcarriers of one RB in the LTE system, or C=10; or in the case that the offset is calculated in units of one half of RB or six subcarriers,
C
=
⌈
log
2
max
i
∈
A
(
N
RB
,
i
DL
)
⌉
,
wherein N RB,i DL is the quantity of available RBs in each of the A types of LTE system bandwidth; or C=7;
or
D
=
⌈
log
2
(
max
i
∈
A
(
N
RB
,
i
DL
)
/
2
)
⌉
,
wherein N RB,i DL is the quantity of available RBs in each of the A types of LTE system bandwidth; or D=6.
30. The narrowband PBCH receiving device according to claim 25 , wherein the CRS frequency domain position indication information is to indicate the position of the CRS corresponding to the frequency domain resource of the narrowband transmission in the CRS sequence of the LTE system relative to the center frequency point in the LTE system bandwidth, the CRS frequency domain position indication information comprises:
1-bit indication information to indicate that a frequency domain resource of the narrowband transmission is located at a high frequency band or a low frequency band divided by the center frequency point of the LTE system bandwidth;
E-bit indication information to indicate a CRS offset of the CRS corresponding to the frequency domain resource of the narrowband transmission relative to the center frequency point.
31. The narrowband PBCH receiving device according to claim 30 , wherein
E
=
⌈
log
2
max
i
∈
A
(
N
RB
,
i
DL
)
⌉
,
N RB,i DL is the quantity of available RBs in each of A types of LTE system bandwidth; or E=7.
32. The narrowband PBCH receiving device according to claim 25 , wherein the narrowband PBCH further carries one or two of the following indication information: indication information to indicate whether the narrowband comprises an LTE control region; indication information to indicate a size of the LTE control region.